Hi Haywood
Again many thanks for your response.
I agree, it would be useful to get more info on Catherine and will see if I can obtain a copy birth certificate for one of Martin's siblings to see if the maiden name is any clearer.
I am not now so sure that Catherine is the best route to my establishing the Co Mayo link, given that it seems that the marriage was after the family arrived in Nottingham. Your comments to another post have however helped enormously. You suggested that the 1911 census might give more information to the place of a persons birth. I have been fortunate in that one of Patrick's sons born in Ireland (Roger) was still alive at that time and the entry for him has been translated as country of birth Ireland - Mays. However when I view the actual entry, it looks very much like Mayo to me. Interestingly his wife, who was also still alive in 1911, was also listed as having been born in Mayo. Which would indicate, to me at least, that the Irish community in Nottingham stayed quite close in the early days. As such I now feel that I have confirmation that my family did indeed come over to England from Mayo. Very much a eureka moment for me.
My next task is to try to establish whereabouts in Co Mayo they may have lived. Are you aware of any resource which might indicate that McCormacks might have lived in a particular town/parish? From some of the sites that I have found on the net, the name or its derivatives do not seem to be particularly common in the area. I might however be looking in the wrong places of course.
I don't think that the 1858 marriage will be relevant as the related names are not ones that I have previously come across - although I am learning to keep an open mind.
Regards
Mack